Scientists believe the massive goldfish may be the result of aquarium dumping, and could threaten the ecosystem of the lake. NBC’s Brian Williams reports.

Animal Tracks

This content comes from Closed Captioning that was broadcast along with this program.

>>>a strange story in the world of nature at a beautiful place. as our sacramento nbc affiliate kcra has reported, massive mutant goldfish are being found in
lake tahoe
. scientists believe they may have gotten there by what they call aquarium-dumping. people releasing their own fish into the water that have no business there. there are worries that widespread breeding among these fish will raise algae levels, and further threaten the pristine water of lake